While there aren't specific services for self-transfer, several add-ons can still support you during your trip. For example:

Lost Baggage Service lets you track your bags in real time and receive compensation if they're lost or delayed.
Check-in Service takes care of checking you in for all your flights and sends your boarding passes directly to your inbox.
Flight Updates via SMS keeps you informed of any last-minute changes to your departure time or gate.

You can see which services are available for your trip by logging in to My Bookings.